* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#app {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.flex_bottom_box{
    position: fixed;
    bottom: 0
}
.flex_box{
    display: flex;
}
